How to get the client's native timezone?

Question

JavaScript

let's say Moscow GMT 3
We need such a format for obtaining the user's date
//21.07.2016.10:56:17 GMT 3

Answer 1

var d = new Date();
console.log(d.getTimezoneOffset()); //смещение от Гринвича в минутах

Answer 2

Date() // "Thu Jul 21 2016 12:04:34 GMT+0300 (RTZ 2 (зима))"